Electrically-driven machine.



N0. 655,49l. Patented Aug. 7, I900. T. H. JOSEPH 8v. J. J. EHBENBElGl-l.

ELECTRICALLY DRIVEN MACHINE.

(Applicntion filb d'J'll. 27, 1899.)

2 Sheets-Sheet I.

(No Model.)

INVENTORS WITNESSES 12 & fi.

T.H.Joseph J .JImrem-eich BY ATTORNiY m: cams PETERS co, PHOTOJJTHO WASHINGTON. n. c.

No. 655,49l. Patented Aug. 7, I900. T. H. JOSEPH &. J. J. EHRENBEICH.

ELEGTRICALLY DRIVEN MACHINE.

lApnlication filed In. 27, 1899.)

2 Sheets-Sheet 2,

(No Model.)

Fig .5

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INVENTORS T.H.Joseph J. J .Ehrenreich WITNESSES:

ATTORNEY n1: mums vrrzas co. Pmnouwu. wnsnmarcn, o, c.

UNITED STATES PATENT OFFICE.

THEODORE II. JOSEPH AND JAMES J. EHRENRE IOH, OF NEW YORK, N. Y.

ELECTRlCALLY-DRIVEN MACHINE.

SPECIFICATION forming part of Letters Patent No. 655,491, dated August 7, 1900.

Application filed January 27, 1899. Serial No. 703554;. (No model.)

To aZZ whom it may concern: Be it known that we, THEODORE H. J OSEP and JAMES J. EHRENREICH, citizens of the United States of America, and residents of New York city, in the county and State of New York, have invented a new and useful Improvement in Electrically Driven Machines, of which the following is a specification.

Our invention relates to means for electrically driving small machines, like sewingmachines, in such a manner that the operator may control the motor and the brake by the foot or feet, While the hands are left free to attend to the product being worked upon by the machine.

The organization embodying our invention consists of the combination of a compound pedal, the one part serving to start the motor by turning on the electric current through a rheostat and to release the brake from the driving-pulley of the motor, and the other part serving the purpose of releasing the first part, and thus applying the brake and turning cit the current. A ratchet on the one part of the compound pedal automatically holds the main pedal at any desired position to regulate the current, and hence the speed of the motor. By pressing the foot on the pedal which is connected to the ratchet the latter is released from the main pedal, which rises and applies the brake and turns off the current simultaneously approximately.

We have constructed the device in such a manner that it may be applied to any of the ordinary sewing-machines.

Referring to the accompanying drawings, Figure 1 shows a plan of the whole combination, the outer dotted lines representing the outline of the table for supporting the machine, such as a sewing-machine, and the in ner dotted rectangle representing the outline of the base of the sewing-machine itself. The view is the same as if the said table were transparent, our apparatus being located under the table. In order to get the whole within the limits of the sheet of drawings, the parts of the device are on a rather small scale, but the details are mostly shown in other figures by themselves on a much larger scale. The phase of the mechanisms in this figure is that of the normal condition. Fig. 2 is a view similar to that in Fig. 1, except that the same is a side elevation, that the phase is that in which the current is turned on full and the brake is released, and that the handle dis on the opposite side of the rheostat c. Fig. 3 is a view similar to that shown in Figs. 2 and 1, except that the same is an end elevation of the essential elements in so far as they do not cause confusion, some of the rear parts being omitted. The phase is normal, ready for starting. Fig. 4 is an enlarged view of the brake by itself, showing it pivoted to a block. Fig. 5 is an enlarged View of the stopping pedal, showing also the spring. The device is in section, partly. Fig. 6 is a different view of that which'is shown in Fig. 4. Fig. 7 is a half of one of the bearings of the stopping-pedal, showing especially the lug for holding one end of the spring. Fig. 8 is a side View of part of the main or starting pedal, shown hinged at one end toasupport. Fig. 9 is a side view, and Fig. 10 a section, at adifierent angle of the crank for applying the brake. Fig. 11 is the connecting-rod for joining the handle of the rheostat to the said crank for purposes hereinafter stated.

a is the motor for driving the sewing-ma chine, and b is its pulley, grooved to receive turned to the left, the current is increased and when turned to the right it is diminished.

c is a chain connecting the handle (1 over the pulley f to the free end of the startingpedal g, the other end being hinged-by a hinge 7t to the foundation i. Aspring j is connected to the handle to resist the action of the pedal g, the other end of the spring being connected to the post 7t. A ratchet Z is so located that its teeth may catch the pedal g as it is pushed downward, being pivoted upon the bearings m,'so as to turn to and from the pedal g, the spring '11 bearing against the ratchet to hold the latter against the pedal. The ratchet carries at right angles to the same a stoppingpedal 0, which on being pressed overcomes the action of the spring and releases the pedal 9 from the said ratchet. One end of the spring at bears against the back of the ratchet,

as stated, and the other end bears against the lug p, which is mounted upon the bearing m, the spring coiling around the shaft q of the ratchet l. The brake r is also connected up with the handle (Z of the rheostat, the said brake r being pivoted by the pin 3 to the block .9, which is stationary. The brake is carried upon a fork t, the tines t spreading to opposite sides of the block 5. Normally the brake r is held away from the pulley b by a spring it, which is fixed at one end by staples u. The spring u is also forked, so that the respective tines may press upon the tines of the fork t, which carries the brake r. Normally the finger '0 on the rod n bears against and holds the brake r against the pulley I) through the action of the crank e", which is connected to the handle d of the rheostat and to the spring j by the connectin g-rod w. The rod 1) is adapted to rotate on its own axis in view of the bearings 00, which are attached to the under side of the table which is shown in Figs. 2 and 3. The form of connection between the crank 22 and the rod 10 is a hook-joint, the hook 20 being on the end of the rod to and the rod to being adapted to slide along and over the crank, so that the latter will be operated by one motion of the rod 10 and not by the other or opposite motion. In Fig. 1 the hook is retaining the crank, and hence the brake is in a fixed position, while in Fig. 2 the hook is shown as removed to the left, by which means the crank '0 has been turned to the left and the finger v has turned over through an angle and released the brake r from the pulley b. To permit of adjustment, the rod 20 is made in two parts,which are connected by a screwclamp w.

As the handle cl carries a current, the same is insulated from the rod w and from the spring j and chain c by means of insulation 2.

We will now describe the modus operandi of our invention.

To start the machine or motor a, having the driving-pulley b, the starting-pedal g is pressed downward by the operators foot until by the sound or otherwise she knows that the machine is running at the desired speed. The ratchet Z catches and holds the pedal g, and hence the handle 01 of the rheostat, at approximately the proper position to maintain this speed, and the operators foot may be removed, so as to be ready to stop the operation by pressing upon the other pedal 0. The pressure of the pedal g pulls upon the chain c, which pulls upon the handle (1, and the springj is extended, as seen in Fig. 2, and thereby put under tension. The movement of the handle d to the left by the said action of the pedal 9 throws the hook w to the left to free the crank 11, and consequently the spring to presses the brake 'r upward, which turns the finger t upward and turns the crank 'u downward, ready to be again acted upon by the hook near its finish when This last action 7 motor, a starting-pedal connected up with both the said brake andsaid rheostat, and a retractile spring for returning the pedal, rheostat and brake to their normal phases, and means for causing the said brake to be non-active, permanently, said means consisting of a rod adjustable in length forming a connecting-rod between the said brake and the said rheostat.

2. The combination with a machine to be driven by a motor, of a brake, a rheostat for respectively stopping and operating the motor in the usual manner, a pedal for operatting the rheostat against the action of a retractile spring, and means for applying and releasing the said brake actuated by said rheostat mechanically, said means consisting of a crank for applying the brake against the action of a retractile spring, and a rod, ad justable in length, connecting said rheostat to said crank.

3. The combination with a machine to be driven, of a motor, a rheostat for regulating the current for the motor, a brake for stopping the pulley of the motor, a starting-pedal, a chain connecting the pedal to the handle of the rheostat, a spring j acting as a retractile spring to return the said handle to its original position, a crank provided with a finger which bears upon the brake to apply it against the action of a spring u, a connect= ing-rod, having a hook, engaging with the said crank, and adapted to actuate said crank at one portion of its throw only, the second spring to, being for returning the brake from.

pressing upon the said pulley, and a second or stopping pedal, having a ratchet to hold the starting-pedal in difierent positions, and adapted to release the said starting-pedal, and means for adjusting the length of said connecting-rod.

at. The combination, with amotor for drivinga machine, of a rheostat for regulating the current for the motor, a brake for stopping the pulley of the motor, a pedal, a chain connecting the pedal to the handle of the rheostat, a spring j, acting as a retractile spring to return the said handle and the said pedal to their original positions, a crank pro vided with a finger which bears upon the brake, to apply it against the action of a given spring 20, a connecting-rod having a hook, which engages with said crank, and adapted to actuate said crank at one portion of its throw only, the second spring a, being for returning the brake from pressing upon said pulley.

5. The combination, with the table of a machine, of a rheostat secured on the under side thereof, and having a handle, a retractile spring, having one end secured to said handle, and the other to a post is projecting downward from the said table, a rod extending from the said handle, parallel to the under surface of the table, a second rod 2) having a crank at one end, and a finger at the other, and lying parallel to the said surface, and at an angle to the first rod, which is provided with a hook, which engages with the said crank, a motor secured under the THEODORE H. JOSEPH. JAMES J. EHRENREIOH.

Witnesses:

WILLIAM J. BARKER, EDWARD P. THOMPSON. 

